Home / 1,242,367.95-1,863,497.71-389,420.13

Finding the Fourth Proportional to 1,242,367.95, 1,863,497.71 and 389,420.13

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Solution

The fourth proportional to 1,242,367.95, 1,863,497.71 and 389,420.13 is: 584,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,367.95 : 1,863,497.71 = 389,420.13 : x
  2. Step 2: Convert to fraction form
    1,242,367.95/1,863,497.71 = 389,420.13/x
  3. Step 3: Cross multiply
    1,242,367.95x = 1,863,497.71 × 389,420.13
  4. Step 4: Simplify right side
    1,242,367.95x = 725,683,520,482.90
  5. Step 5: Solve for x
    x = 725,683,520,482.90/1,242,367.95
  6. Step 6: Final answer
    x = 584,113.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.